hi, all,


i have completed my semi automatic blood chemistry analyser poject. i have a 7806 regulator for light source (mounted on the chasis), and a 7805 for logic poersupply, 78/7912 pair for analog circuit dual supply. the are emmiting much heat so that its readings deviate from time to time. now i'm planning to install a brushless cooling fan. my question is what should be direction of the air flow, inside out or vice versa. please suggest.

thanks


abhishek